How to fix the speedometer on a 2002 trailblazer 4.2. I've already replaced the speedometer and the speed sensor and it still doesn't work. Any clues on how to fix?

 

know anyone with a full function scan tool that can do a cluster sweep?


the cluster you put in is used or new?

 

The stepper motors go bad in must of the Trailblazers. Swapping them out usually works. Disassemble the cluster and there are 4 spots on the backside of the stepper motor. Unsolder and replace. Should be fine after